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24    
25      <p>The <b>MITgcm</b> (<b>MIT</b> <b>G</b>eneral <b>C</b>irculation      <p>The <b>MITgcm</b> (<b>MIT</b> <b>G</b>eneral <b>C</b>irculation
26        <b>M</b>odel) is a numerical model for        <b>M</b>odel) is a numerical model designed for study of the
27        studying the ocean and atmosphere. It is capable of simulating these        atmosphere, ocean, and climate. Its non-hydrostatic formulation
28        fluids at a wide range of scales and can resolve many different        enables it to simulate fluid phenomena over a wide range of
29        processes. It has a non-hydrostatic capability (Marshall et al., JGR 1997a        scales; its adjoint capability enables it to be applied to
30        &amp; b) and uses the finite volume method to accurately represent the        parameter and state estimation problems. By employing fluid
31        bottom boundary position (Adcroft et al., MWR 1998).<br /><br /></p>        isomorphisms, one hydrodynamical kernel can be used to simulate
32          flow in both the atmosphere and ocean.</p>
33      <div class="c1"><span class="c3"><b>News</b></span></div>  
34        <p>You are welcome to <a href="http://mitgcm.org/source_code.html">
35  <!--        download</a> and use MITgcm.</p>
36    
37  To add News items, please copy the following block outside these comments and      <p>Papers charting the development of MITgcm <a
38  replace the ===DATE=== and ===MESSAGE=== place-holders with your date and your        href="http://paoc.mit.edu/cmi/publications.htm">can be found here.
39  text:        </a></p>
40    
41      <p><b>===DATE===&nbsp;:</b><br /></p>      <hr align="center" size="1" width="75%" />
42    
43          <blockquote>      <div class="c1"><br /><span class="c3"><b>News</b></span></div>
44            ===MESSAGE===<br /><br />        
45          </blockquote>        <!--
46          To add News items, please copy the following block outside these comments
47  -->        and replace the ===DATE=== and ===MESSAGE=== place-holders with your date
48      <p><b>December 9th 2003&nbsp;:</b><br /></p>        and your text:
49          
50          <blockquote>        <p><b>===DATE===&nbsp;:</b></p>
51            The new continuous testing page at <a        <blockquote>
52            href="http://mitgcm.org/testing.html">        ===MESSAGE===
53            http://mitgcm.org/testing.html</a> provides information on the status        </blockquote>
54            of the latest development code. The page shows summary pass/fail        -->
55            ratios for the MITgcm regression tests on various platforms.  Details  /
56            on the platforms being tested and detailed information on the status  
57            of individual regression tests can be viewed from links on the test        <p><b>15 January 2008&nbsp;:</b></p>
58            page.  <br /><br />        <blockquote>
59          </blockquote>        Breaking News: Hidden up-to-date Documentation escaped from hide-out:
60          <br>
61      <p><b>October 27th 2003&nbsp;:</b><br /></p>        <A href="http://eddy.csail.mit.edu/r2/latest/">Latest Online Documentation</A>
62          </blockquote>
63          <blockquote>  
64        <b><a href="http://paoc.mit.edu/cmi/">MIT Climate Modeling Initiative        <p><b>March 19, 2007&nbsp;:</b></p>
65                (CMI)</a></b> web pages introduce the MITgcm model, its        <blockquote>
66                applications, and the development team.<br /><br />        Breaking News:  The MITgcm is now able to generate Sea-Ice Donuts.
67          </blockquote>        In a push to move forward MITgcm on the path of fundamental science and climate
68              understanding, David Ferreira and Jean-Michel Campin
69      <p><b>October 21st 2003&nbsp;:</b><br /></p>        simulated a Sea-ice Donut using a coupled AquaPlanet configuration (see
70          movie <A href=movies/Sea_Ice_Donut_x1.mpg>here</A>).
71          <blockquote>        This experiment was initialized with  the T and S fields from
72            MITgcm and ECCO-JPL team <b><a        a previous Aquaplanet run which has polar sea-ice caps. These
73              href="http://www.sgi.com/newsroom/press_releases/2003/october/linux.html">        caps are associated with salt-compensated temperature inversions in the upper
74              feature as showcase application</a></b> in NASA-SGI large shared        ocean. The new run is initialized without sea-ice and within a month, large
75              memory system program.<br /><br />        sea-ice caps grow over the poles, rejecting salt. This triggers convection which
76          </blockquote>        in turns brings relatively warm water to the surface and melts the ice close
77                  to the poles. Here we have a <A href=movies/Sea_Ice_Donut_x1.mpg>donut</A>.
78          Look out for that chapter on aqua-planets in the next IPCC report!
79          </blockquote>
80    
81          <p><b>Feb 04, 2007&nbsp;:</b></p>
82          <blockquote>
83           News is back by popular request. New advection schemes are currently
84           being tested. Some preliminary results from the new schemes can be seen
85           <A href=news/advection_testing_jan07/advection_testing.html>
86           here.
87           </A>
88           The plots show a tracer being transported and stretched in the
89           MITgcm advect_xz verification test. Both new schemes (OS7MP
90           and Prather second-order scheme with limiting) have very low implied
91           diffusivity.
92           We are currently evaluating the
93           schemes to assess their implied diffusivity, with a bottle of
94           Jean-Michel's favorite Belgian
95           beer going to the the least diffusive scheme - watch this space!
96          </blockquote>
97    
98          <p><b>March 9, 2005&nbsp;:</b></p>
99          <blockquote>
100           A short article entitled
101           "NASA Supercomputer Improves Prospects for Ocean Climate Research"
102           in the current EOS (volume 86, number 9, March 1 2005)
103           gives a succinct overview of some of the advanced high-resolution
104           state-estimation work being undertaken with MITgcm by members
105           of the ECCO consortium. The article describes
106           ground-breaking computational
107           technologies that have enabled this work and outlines the future goals of
108           this next generation planetary scale assimilation initiative. A pdf containing
109           the article can be found
110           <a href="http://mitgcm.org/articles/EOSecco.pdf">
111           here.
112           </a>
113          </blockquote>
114          
115          <p><b>Sep 24, 2004&nbsp;:</b></p>
116          <blockquote>
117            MITgcm is now able to write and (to a lesser extent) read NetCDF files.
118            The framework (the "MNC" package) has been tested by numerous developers
119            on literally dozens of machines and, for the past month, has been a
120            working part of our standard verification suite.  We encourage MITgcm
121            users (especially new users) to try out the MNC package since the model
122            output is now much easier to read and understand.  For further NetCDF
123            information please see:
124            <ul>
125              <li><a href="http://mitgcm.org/cmi_redir.php/package_mnc">
126                  Manual entry for the MNC package.</a></li>
127              <li>Directions <a
128                  href="http://mitgcm.org/pipermail/mitgcm-support/2004-September/002589.html">
129                  from our email archives</a> and <a
130                  href="http://mitgcm.org/mwiki/index.php/MNC_Package">from our
131                  wiki</a> for installing NetCDF.</li>
132              <li>The <a
133                  href="http://my.unidata.ucar.edu/content/software/netcdf/index.html">
134                  main NetCDF web site</a>.</li>
135            </ul>
136           </blockquote>
137          
138          <p><b>May 20, 2004 at 05:01 EDT&nbsp;:</b></p>
139          <blockquote>
140            Congratulations to Ed and Boo on the birth this
141            morning of a 7lb 1oz, baby girl,
142            <a href="http://eddy.csail.mit.edu/gallery/Alex-Arrives">Alexandra Sophia</a>.
143          </blockquote>
144          
145          <p><b>April 13, 2004&nbsp;:</b></p>
146          <blockquote>
147            A new movie by Dimitris Menemenlis and Chris Henze shows ice dynamics
148            over the North Pole. The viscous-plastic behavior of ice sheets subject
149            to wind forcing and ocean currents can be clearly seen in the
150            translucent ice-sheet. The movie can be downloaded from <a
151            href="movies/ice_03.mpg"> here</a> (this one is 91MB!).  A set of web
152            pages with summary information regarding MITgcm simulations being
153            carried out in the ECCO high resolution global ocean state estimation
154            initiative can be found <a href="http://ecco.jpl.nasa.gov/cube_sphere">
155              here</a>.
156          </blockquote>
157    
158          <p><b>March 26, 2004 at 01:38 EST&nbsp;:</b></p>
159          <blockquote>
160            Congratulations to Alistair and Sonya on the birth this
161            morning of a 7lb 3oz, 19.5 inches long baby girl, Ariane Jade.
162          </blockquote>
163    
164          <p><b>January 22, 2004&nbsp;:</b></p>
165          <blockquote>
166            A spectacular movie by Chris Henze of NASA AMES beautifully captures an
167            eddy permitting expanded cube sphere MITgcm simulation being carried out,
168            as part of the <a href="http://www.ecco-group.org">ECCO</a> project, by
169            Dimitris Menemenlis and others at JPL with help from core MITgcm team members
170            and staff from NASA AMES. The animation
171            shows the speed of ocean currents at 15m depth from the simulation, it can be
172            downloaded <a href=news/cube_6.mpg>here</a> (its 47MB
173            but worth waiting for!). A second animation with different perspectives and
174            rotation can be downloaded <a href=news/cube_7.mpg>here</a>.
175            As described <a href=news/agu_2004/menemenlis_et_al.pdf>here</a> Dimitris Menemenlis
176            will be presenting aspects of this calculation at AGU in Portland.
177            A list of some other AGU 2004 presentation abstracts related to MITgcm can be
178            found <a href=news/agu_2004>here</a>.
179          </blockquote>
180                
181    </body>    </body>
182  </html>  </html>
183    

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